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An evaluation of CAST: a Computer-Aided Speechreading Training program.

J P Gagné1, D Dinon, J Parsons

  • 1Elborn College, University of Western Ontario, London.

Journal of Speech and Hearing Research
|February 1, 1991
PubMed
Summary
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The Computer-Aided Speechreading Training (CAST) program effectively improved synthetic visual speech perception skills. While not all measures showed improvement, CAST enhanced sentence understanding and discourse tracking abilities.

Area of Science:

  • Audiology
  • Speech and Hearing Sciences
  • Human Communication

Background:

  • Speechreading is crucial for auditory communication.
  • Computer-based training offers a scalable approach to enhance speechreading skills.

Purpose of the Study:

  • To evaluate the effectiveness of the Computer-Aided Speechreading Training (CAST) program.
  • To assess improvements in visual speech perception following CAST intervention.

Main Methods:

  • Two groups of normal-hearing adults participated.
  • A pretraining and posttraining protocol included visual consonant recognition, sentence understanding (with/without context), and Continuous Discourse Tracking.
  • One group underwent CAST training for up to 10 weeks.

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Main Results:

  • No significant differences were found in viseme recognition or sentence understanding without context.
  • Significant improvements were observed in total word recognition for sentences with context and in the CAST-modified Continuous Discourse Tracking activity.

Conclusions:

  • CAST demonstrates effectiveness in enhancing specific aspects of visual speech perception.
  • The program shows promise for improving skills related to contextual understanding and continuous discourse processing.